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发明名称
摘要
申请公布号
FR2133347(A5)
申请公布日期
1972.11.24
申请号
FR19710013645
申请日期
1971.04.16
申请人
BERTRAND ALBERT
发明人
分类号
E05F15/56;(IPC1-7):05F15/00
主分类号
E05F15/56
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